v1.34.0 is not showing any LOTW uploads regardless of the selected status.
QSL Management/LOTW/Select Required has always show the Requested and Queued items by default but doesn't show them in this version. Downgraded to 1.33.1.0 and they all show correctly.

I got mine to work. Selected "Automatic upload on closing" under "LOTW Settings" section of "External Logs" tab of the Options (see previous post to this thread) and then saved the options (click on Disk icon). I then unchecked "Automatic upload on closing" and clicked on Save again and voila it worked.

But...when upgrading from previous version QSL Management LOTW Select does not work. This same behavior was seen on two different systems.

Based on the behavior I'm guessing the flag for the upload on closing does not exist or is not set and the QSL Management select is failing silently because of it. So that's why toggling it works....it creates it or sets it?

Based on the behavior I'm guessing the flag for the upload on closing does not exist or is not set and the QSL Management select is failing silently because of it. So that's why toggling it works....it creates it or sets it?
de Mike W9MDB

Good point.
The variable is initialized but probably it's not loaded properly if you don't enter in the program settings at least one time.